Work-marking tool



March 16 1926. 1,576,857

w. SHIPMAN WORK MARKING TOOL Filed Nov. 6, 1924 2 Sheets-Sheet 1 QL- I Qua/"e110 March 16 1926. 1,576,857

. L. W. SHIPMAN WORK MARKING TOOL Filed Nov. 1924 2 Sheets-Sheet 2 I Elmo/who: I

Witness I Q'a Patented Mar. 16, 1926.

UNITED STATES 1576,85? PATENT OFFICE.

LUTHER WEBESTER SHIPMAN, OF GREENVIIJLE, SOUTH CAROLINA.

WORK-MARKING r0013.

Application filed November To all whom it may concern:

Be it known that I, lnrrrmu 1V. SHIPMAN, a citizen of the United States, residing at Greenville, in the county of Greenville and State of South Carolina, have i vented cer tain new and useful Improvements in Yorkhiarking Tools; and I do declare the following to be a full, clear and exact descrip tion of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in tools adapted to be set in numerous ways for use by carpenters, in marking straight and oblique cuts, circles etc, the tool being 'read ily adapted for use in laying out rafters.

T he object of the invention is to provide a simple and inexpensive tool of the class vention.

set forth, yet one which will be very eflicient and desirable and may be easily operated.

With the foregoing in view, the invention resides in the novel subject matter hereinafter described and claimed the description being supplemented by the accompanying drawings;

Figure 1 is a side elevation of a marking tool constructed in accordance with my in- Figure 2 is an edge view. I

Figures 3, 4: and 5 are transverse sectional views on lines 33, 4+4: and of Fig. 1..

Figures 6 to 10 inclusive are diagrammatic elwations showing different ways of using the tool.

In the drawings above described the nuineral 1. designates a square having two blades 2 and 3 disposed at right angles to each other, the inner edges of said blades preferably having scales i and 5 respectively, while their outer edges are provided with similar scales 6 and T. The two blades are provided with central longitudinal slots 8 for a purpose to appear.

llxtending across one flat side of the square 1. is a straight bar 9 having relatively wide longitudinal slot '10, while dis posed parallel with the bar 9, at the opposite side of the square. is a second bar 11 having a relatively narrow longitudinal slot 12. At one end, the bars 9 and 11 terminate in inwardly spaced relation with the outer edge of the blade 2 and are preferably cut obliquely as indicated at 1.3, so that they will not interfere with proper marking 1 a ong sa d edge of said. blade- At their the square.

6, 1924. Serial N0. 748,188.

outer ends, the bars 9 and 11 project outwardly from the square and. are glued or otherwise, suitably secured against opposite sides of a spacer 14. These endsof the bars are also provided with a straight transverse arm lowhich is secured at right angles thereto; The edges of the bars 9 and 11 are provided with suitable scales 16 and 17 Passing through the slots 10 and 12, 1 have shown a fastening screw 18 which also passes through one of the slots 8 of This screw is preferably provided at one end with an operating. head or thumb piece 19 and with an outstanding annular flange 20, between which and the bar llfawasher 21. may well be placed. The other end of the screw 18 isthreaded through a rectangular nut which is slidably received in the slot- 10 and is preferably provided with a transverse indicating marl: 23 for co-action with one or the other of the scales 16 and 17. The end of the screw, last referred to, preferably projects beyond the bar 9 and is brought to a sharp point, as indicated at 2 t. lVhen this screw is loosened and is adjusted any desired dis tance from the cross arm 15, the device may be used as a gauge as illustrated in Fig.7, and the pointed end of the screw, will act to mark the work, as indicated by the black line in that figure. When. the device is so used, the cross arm 15 acts as a guide to engage the edge of the piece of lumber being marked.

The relatively short edge of the bar 9 isformed with an elongated notch 25, disposed adjacent the outer edge ofthe blade 2, and received norn'ially in this notch, is a block 26 which is adapted to be longitudinally extended from the barf} so as to (3K- tend to or beyond. said outer edge of said blade 2. This extended position of the bloclrilti is disclosed in Fig. 8; and it may here be explained that the block extended so that it may co-act with the scale 6, in properly setting one end of the short edges of the bars 9 and 1.1 with respect to the scale 6, or at the desired distance from the inner end of the blade while the scale 7 is employed for co-action with either the long or short edges of said bars 9 and 1.1 for properly setting the ends of said bars adjacent the cross arm 15. After the proper setting has been accomplished, the block 26" is g n returned. tof'apositi n within the notch so that it will not interfere w'th proper marking along the outer edge of the blade 2.

Carrying the block '26, I have shown a metal plate 27 which contacts with the outer side of the bar 9 and is provided with a lateral flange 528 received in a longitudinal groove 29 in said bar. T his plate is formed with a slot parallel with the groove 29 and flange 28, and a screw 31, which passes through the bars 9 and ll and through the slot 8 of the blade 2, also passes through said slot 3i. A one end, the screw 31 is formed with a thumb-piece 32 by means of which it may be rotated, and with an outstanding llange 33, while the opposite end of said screw is pointed as indicated at 34, and threaded through a clamping nut 35. It vill be seen that the single screw 31 serves to normally hold the plate 27 in its retracted position (Fig. 1), as well as clamping the bars 9 and 11 against opposite sides of the blade 2 of the square 1.

The device maybe used in numerous ways, some of which are illustrated on sheet 2 ol the drawings. F 6 illustrates the manner in which the cross arm 15 may coact with one oi the bars 9l1, in permitting the formation of a mark straight across one edge of a rafter or other piece of lumber. This same general relation of parts may be employed, when. the device is to be used as a try-square. Fig, 7 illustrates the manner of using the device as a gauge, after first setting the screw 18, the proper distance from the cross arm 15. The tool may well be used as a gauge when it is necessary to rip the lower end of a rafter along a given line, to permit sul'istantially ha f the eer'tical width of said rafter to project'beyond a cap plate, to tormeaves.

Figure 8 discloses the manner in which i the tool may be employed for marking the side of a rafter, and while in this figure, the plate 2'? and the block QGha-ve been shown in projected. position, they are in reality retracted when the tool is used in the manner set fortln'so that they will not obscure the edge mark on the rafter, which mark has been previously made by using the tool in the manner shown in Fig. 6. When so retracted, it will also be seen that theparts 26 and E3? will not interfere with marking the side of the rafter entirely to the edge their-cot.

in Fig. 9, the bars 9 and 11 have been swung into alinement with one of the blades oi the square 1, so that one of them may'contact with one edge of a piece 0st lumber, the cross arm 15 may rest on the latter, and the other blade of the square may extend across it, for guiding apencil'in making a line for a square end cut.

By adjusting the screw 18 to any desired distance from the Screw 31, one of them may act as a center and the other as a scribe, for marking circles, as shown in Fig. 10.

It will be seen from the foregoing that while the device is simple and inexpensive, it will have a wide range of uses and will be generally efi'icient and desirable. As excellentresults are obtainable from the details disclosed they are preferably follov-sed, but within the scope of the invention as claimed, minor changes may of course be made.

I claim:

1. A work marking tool comprising a square having two blades atl ight angles to each other, the outer edge portions of said blades having scales, a bar adapted to es:- tend obliquely from one blade to the other, men. nsslidably connecting the 'bar and blades one end of said bar terminating in inwardly spaced relation to the outer edge of one blade, and ablock slidably mounted on said one end of said bar and having one edge in alinement with one edge-thereof, said block being adapted to be elabhilded from said bar end to cross one of the aforesaid scales When setting the bar along the blades of the square.

A work n'iarking tool comprising a square l'iaving two blades at right angles to each other, the outer edge portions of said blades having scales, a bar slidable on one of said blades and having one end disposed in inwardly spaced relation to the outer edge of the other blade, means interconnecting the bar and said blade said one'end of the bar having a notch in one of its corners, a block received normally in said notch with one edge in .alinement with the adjacent longitudinal edge of the bar, a slide plate contacting with one face of said bar and carrying said block to permit the lr ilter to be extended across the outer edge of said other blade, said bar having a longitudinal groove and the plate being formed with a laterally extending flange received slidahly in said groove, and a releasable fastener passing through said bar, said plate and said other blade, the plate being formed with a slot receivi said fastener and dispose-d parallel with the aforesaid flange, said other blade having a longitudinal slot receiving said fastener.

In testimony whereof I have hereunto allixed my signature.

LUT 'XVEBESTER 'SlllPMAN. 

